Bug 1293854 (CVE-2014-9512) - CVE-2014-9512 rsync: Transferring file outside destination path via just-sent symlink
Summary: CVE-2014-9512 rsync: Transferring file outside destination path via just-sent...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2014-9512
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1293856
Blocks: 1295358
TreeView+ depends on / blocked
 
Reported: 2015-12-23 09:38 UTC by Adam Mariš
Modified: 2019-09-29 13:41 UTC (History)
6 users (show)

Fixed In Version: rsync 3.1.2
Doc Type: Bug Fix
Doc Text:
It was discovered that rsync did not properly perform sanity checks on certain meta-information. By sending specially crafted meta-information, a remote attacker could possibly exploit this flaw to cause an rsync endpoint to write data to files outside of the expected destination path.
Clone Of:
Environment:
Last Closed: 2016-02-18 10:51:02 UTC
Embargoed:

Attachments (Terms of Use)

Description Adam Mariš 2015-12-23 09:38:47 UTC 
A security fix in rsync 3.1.2 was released, adding extra check to the file list to prevent the malicious sender to use unsafe destination path for transferred file, such as just-sent symlink. Affects versions older than 3.1.2.

Upstream patches:

 - Complain if an inc-recursive path is not right for its dir.
https://git.samba.org/rsync.git/?p=rsync.git;a=commit;h=962f8b90045ab331fc04c9e65f80f1a53e68243b

 - Add parent-dir validation for --no-inc-recurse too.
https://git.samba.org/rsync.git/?p=rsync.git;a=commitdiff;h=e12a6c087ca1eecdb8eae5977be239c24f4dd3d9

Additional similar security patches:

 - Receiver now rejects invalid filenames in filelist.
https://git.samba.org/rsync.git/?p=rsync.git;a=commitdiff;h=4cad402ea8a91031f86c53961d78bb7f4f174790

 - Have receiver strip bogus leading slashes on filenames.
https://git.samba.org/rsync.git/?p=rsync.git;a=commitdiff;h=371242e4e8150d4f9cc74cdf2d75d8250535175e
Comment 1 Adam Mariš 2015-12-23 09:39:12 UTC 
Created rsync tracking bugs for this issue:

Affects: fedora-all [bug 1293856]
Comment 2 Fedora Update System 2016-01-10 19:23:32 UTC 
rsync-3.1.1-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2016-01-22 03:18:55 UTC 
rsync-3.1.1-7.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 4 Andrej Nemec 2016-01-22 08:05:53 UTC 
Assigned CVE-2014-9512 as reported in https://packetstormsecurity.com/files/135351/USN-2879-1.txt
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